Excuse me, is there book by Mo Yan?—Yes. It’s on bookshelf over there.

Many students ______ changes to show themselves in class because the class size is too big.

It’s difficult for the village children to cross the river for school.— I think a bridge _______ over the river.

Will you go with us for an outing on Saturday?— I’d like to, but I am really busy these days. I can’t _______ a whole weekend.

How do you learn English so well?—______ chatting with my uncle in America-online. [ ]